Clevis.



No. 779,094. v PATENTED' JAN. 3, 1905. J. B. MORRISON & J. w. GALLISON.

GLEVIS.

APPLICATION FILED DEC. 2a, 1903.

2 SHEETS-SHEET 1.

No. 779,094. PATENTED JAN. 3, 1905.

"J. B. MORRISON & J. W. CALLISON;

ULBVIS.

APPLICATION FILED D30. 26, 1903.

2 BHBETB-BHEET 2,

UNTTED STATES Patented January 3, 1905.

PATENT FFICE.

JOSEPH B. MORRISON AND JOHN W. OALLISON, OF FORT MADISON, IOWA, ASSIGNORS TO MORRISON MANUFACTURING COMPANY, OF FORT MADISON, IOWA, A FIRM.

CLEVIS.

SPECIFICATION forming part of Letters Patent No. 779,094, dated January 3, 1905. Application filed December 26, 1903. Serial No- 186,688;

To all whom, it may concern:

Be it known that we, J OSEPH B. MORRISON and JOHN W. OALLIsON, citizens of the United States, residing at Fort Madison, Iowa, have invented certain new and useful Improvements in Olevises, of which the following is a specification.

This invention relates to clevises, and particularly to that class of clevises adapted to be attached to the forward end of a plowbeam, and has for its object to provide a clevis of this character adapted to be attached to the end of the plow-beam by means of a connection having in effect a universal or gimbal joint movement the movements of which are regulated and controlled by the operator through handlevers; to provide a clevis of the character referred to which can be adjusted as to all of its movements by the use of said levers without stopping the plow; to provide, in connection with a clevis adapted to be moved by means of hand-levers to regulate the line of draft, a socket for receiving the stem of a pole or tongue when the use of such is desired, and in general to provide a compact, cheap, and practical clevis of the character referred to. 1

The invention will be understood from the following description, reference being had to the accompanying drawings, in which- Figure l is a perspective view of a clevis embodying the invention and attached to the end of a plow-beam. Fig. 2 is a top plan view of the same, the. regulating-levers being shown in section. Fig. 3 is a view similar to Fig. 1, showing the clevis moved downwardly upon its horizontal axis. Fig. 4 is a view similar to Fig. 2, showing the clevis moved laterally. Fig. 5 is a detail view of the joint or hinge block, and Fig. 6 is adetail showing the clevis-frame.

- Referring to the drawings, 1 designates the end of a plow-beam, having mounted upon the opposite sides thereof two castings 2 and 3, bolted thereto so as to project past the end of the beam in such manner that the outer ends together form a U-clip. Formed integrally with the casting 3 is a transversely-extending tubular socket 4, adapted to receive the stem of a pole or tongue when it is desired to use such with the plow.

5 designates a clevis-frame rectangular in form, having at. each end thereof a transverse tubular socket, designated, respectively, 6 and 7, within the outer one of which is pivotally mounted in the usual manner an end clevis 8, provided with the usual adjusting-holes 8. The tubular socket at the rear end of the clevis-frame is interrupted, as indicated at 9, and into this interrupted portion is adapted to fit one of the members of a hinge-block 10, which is pivotally held in place by a bolt or pintle 11. The hinge-block is provided with an integral socket member 10, which is pivotally mounted between the arms of the U-clip formed by the ends of the castings 2 and 3. By this arrangement it will be seen that the clevis-frame 5 is attached to the end of the plow-beam to swing upon a joint having, in effect, a universal movement. Upon the upper edge of the clevis-frame 5 is integrally formed an upwardly and rearwardly extending arm or bell-crank 11, having in the end thereof a rod receiving aperture 12. Upon the side thereof and at the rear end of said clevis-frame is a similar but laterallyextending arm or bell-crank 13, having in its end a rod-receiving aperture 14.

and 16 designate, respectively, two segment-castings mounted upon opposite sides of the beam a short distance in the rear of the castings 2 3, each being bowed outwardly to provide aspace into which is pivotally mount-- ed, between the inner walls thereof and the sides of the beam, the ends of the levers 17 and 18, respectively,having thereon the usual locking-dogs, as indicated at 19, adapted to engage theteeth of the segment-castings, whereby the levers are held in adjusted positions.

20 and 21 designate, respectively, two connecting-rods connecting the lovers 17 and 18,

respectively, with the arms 13 and 11 on the clevis-frame, whereby the latter is moved, by means of the levers 17 and 18, to various positions of adjustment to regulate the line of draft, and thereby the furrow that is being made.

It is obvious from the drawings that the pivotal connection between the rod 21 and the arm 11 is in line with the vertical axis of the clevisframe and so arranged that movement thereupon is free and easy and that by reason of a pivotal connection between the rod 20 and the lever 17 no obstruction prevents a free and easy movement of the clevis-frame upon its horizontal axis, constituting, in effect, a universal or gimbal joint between the clevis and the plow-beam the various movements of which are controlled and regulated by the hand-levers at the will of the operator. It will thus be seen that the operator may change the line of draft to regulate the furrow by the use of the levers l7 and 18 without stopping the plow, and he is thus enabled to straighten his furrow while the plow is moving and without getting off his seat in case the furrow has from any cause become irregular or to adapt the plow to the line of draft as the conditions of the land over which he is passing demands or in finishing up a land instead of stoping and raising the old form of clevis one or more notches he simply moves the lever 18, thereby giving the plow a heavier bearing on the landside thereof.

We are aware that it is old to provide a vertical pivot attachment to the plow-beam to regulate the lateral movement of the clevis; but in this construction it is necessary to stop the plow and adjust by hand the vertical adjustment to regulate the line of draft of the plow. Thisobjectioniscompletelydoneaway with in the present invention, and all adjustments of the plow can be made from the seat by the operator without stopping the plow and described, except in so far as such details are made the subject-matter of specific claims.

We claim 1. A draft attachment for a plow, comprising a hinge-block provided with hinge-sockets extending at right angles to each other and hinged through one of said sockets to the plow-beam, a clevis-frame hinged in the other socket in said hinge-block and provided with a pair of arms projecting therefrom at right angles to each other, and means connected to said arms for moving said clevis-frame and locking it in various adjusted positions.

2. A draft attachment for a plow, comprising a hinge-clip mounted upon said plow, a hinge-block provided with hinge-sockets extending at right angles to each other and hinged through one of said sockets to said hinge-clip, a clevis-frame hinged to the other socket in said hinge-block and provided with a pair of arms projecting therefrom at right angles to each other, and means connected with said arms for moving said clevisframe and looking it in a variety of adjusted positions.

3. draft attachment for a plow, comprising a hinge-clip secured to the end of the plow-beam and provided with an integrallyformed pole-attaching socket, a hinge-block provided with a pair of hinge-sockets extending at right angles to each other and hinged to said hinge-clip, a clevisframe hinged to the other socket in said hinge-block and provided with a pair of arms projecting therefrom at right angles to each other, a pair of hand-le- Vers mounted upon said plow and connected with said arms, whereby to move said clevis frame into a'variety of positions, and means forv locking said levers and said clevisframe in such adjusted positions, substantially as described.

JOSEPH B. MORRISON. JOHN W. OALLISON. I

Witnesses:

E. W. CAMP, A. J. KEssLER. 

